BMW 5 Series Gran Turismo (2017) is 38 mm (1.50 inch) longer, 67 mm (2.64 inch) wider, 106 mm (4.17 inch) higher and has 112 liters (3.96 ft3) bigger cargo space than Cadillac STS (2018).
Cadillac STS (2018) is 156 kg (344 lbs) lighter than BMW 5 Series Gran Turismo (2017).